Adsorption tank

Abstract

The invention provides an adsorption tank capable of promoting drainage of a fastening part when the adsorption tank is wet. One embodiment is an adsorption tank (10) provided with: a housing (12) that accommodates an adsorption material; and a mounting plate (20, 22) extending from an outer wall surface (17) of the housing (12), the mounting plate (20, 22) having: a fastening part (24) for mounting to a vehicle; and at least one drain hole (30) provided between the housing (12) and the fastening portion (24), the mounting plates (20, 22) being at least partially inclined so as to become lower from the fastening portion (24) toward the at least one drain hole (30).

Description

Technical Field

[0001] The technology disclosed in this application relates to adsorption tanks. Background Technology

[0002] In vehicles such as automobiles equipped with engines, there is usually an adsorption canister to capture evaporated fuel generated from the fuel tank. As disclosed in Japanese Patent Application Publication No. 2021-161892, the adsorption canister is mounted to the vehicle frame, for example, via a bracket.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2021-161892 Summary of the Invention

[0006] The problem the invention aims to solve

[0007] The aforementioned adsorption tank lacks a structure that actively drains water when the mounting portion of the vehicle body comes into contact with water, resulting in corrosion of fasteners and other components due to water retention. Therefore, it is desirable to provide an adsorption tank that promotes drainage of fasteners when they come into contact with water.

[0008] Solution for solving the problem

[0009] One technical solution of this technology is an adsorption tank, wherein the adsorption tank comprises: a shell for storing adsorption material; and a mounting plate extending from the outer wall surface of the shell, the mounting plate having: a fastening portion for mounting to a vehicle; and at least one drain hole disposed between the shell and the fastening portion, the mounting plate being at least partially inclined in a manner that decreases from the fastening portion toward the at least one drain hole.

[0010] Therefore, even if the mounting plate gets wet, the water on the upper surface is guided towards the drain hole, and the water adhering to the lower surface flows away from the fastener. Vibrations during vehicle operation promote their flow downwards. Thus, for example, in cases where bolts are used for fastening, corrosion of the bolts caused by water retention in the fastener can be suppressed.

[0011] According to an embodiment, the upper surface of the mounting plate has a curved surface extending downward from the outer wall surface of the housing toward the at least one drain hole.

[0012] Therefore, water falling along the outer wall of the shell will not remain on the side of the shell, but will be guided to the drain hole. Attached Figure Description

[0013] Figure 1 This is a front view of an adsorption tank with a mounting plate as one embodiment.

[0014] Figure 2 yes Figure 1 An enlarged top view of the mounting plate of the adsorption tank.

[0015] Figure 3 yes Figure 2 A cross-sectional view of the mounting plate at line III-III.

[0016] Explanation of reference numerals in the attached figures

[0017] 10. Adsorption tank; 12. Shell; 13. Shell body; 14. Cover component; 15. Opening; 16. Vent; 17. Side wall; 18. Reinforcing plate; 20, 22. Mounting plate; 22a. Upper surface; 22b. Lower surface; 22c. Concave curved surface; 24. Through hole; 26. Collar; 28. Support; 30. Drain hole; H. Horizontal plane. Detailed Implementation

[0018] Hereinafter, various embodiments of the present technology will be described with reference to the accompanying drawings.

[0019] [Adsorption Can]

[0020] As one implementation method, Figure 1 This refers to an adsorption canister 10 installed in vehicles such as automobiles equipped with engines to capture evaporated fuel (vapor) generated from the fuel tank (not shown). Fuel in the fuel tank is drawn out by a fuel pump and supplied to the engine through a supply passage. Meanwhile, a ventilated passage connected to the atmosphere is connected to the fuel tank to mitigate pressure fluctuations that occur during parking. The adsorption canister 10 is positioned midway through this ventilated passage, and when the pressure in the fuel tank increases, it adsorbs and captures fuel molecules using an adsorption material such as activated carbon, preventing the evaporated fuel from being released into the atmosphere.

[0021] The adsorption tank 10 has a housing 12 for storing adsorbent material. The housing 12 can be, for example, constructed from a housing body 13 and a cover member 14. The housing 12 of the adsorption tank 10 has a port 15 connected to a vapor passage communicating with a fuel tank. Additionally, the housing 12 has an atmospheric port 16 connected to an atmospheric passage communicating with the atmosphere. Typically, the housing 12 also has a purge port connected to the engine's intake manifold via a purge passage. A fluid passage is formed inside the housing 12, and multiple adsorption layers composed of an aggregate of adsorbent material such as activated carbon are disposed within this fluid passage.

[0022] [Mounting plate]

[0023] The adsorption tank 10 can be installed, for example, on frame members such as side beams or cross beams that constitute the lower structure of the vehicle body. The adsorption tank 10 has at least one mounting plate 20, 22 (two shown in the figure) extending laterally from the outer wall surface of the housing 12, and is mounted to the vehicle by means of this mounting plate 20, 22. As one embodiment, it can be configured to extend laterally from the side wall surface 17 of the housing 12 (specifically, the outer wall surface of the cover member 14). As another embodiment, the mounting plate can also be provided on any other outer wall surface that does not directly constitute the side wall of the housing 12. As one embodiment, the adsorption tank 10 can be installed "horizontally" with the flow of fluid within the housing 12 generally horizontal, as shown in the figure, but as another embodiment, it can be installed in a different orientation. Hereinafter, the mounting plate 22 extending from the side wall surface 17 of the cover member 14 of the housing 12 will be described, but the mounting plate 20 extending from the housing body 13 can also be configured similarly.

[0024] like Figure 2 , Figure 3 As shown, a generally vertical reinforcing plate 18 can be provided between the mounting plate 22 and the side wall surface 17. The mounting plate 22 has a fastening part consisting of a through hole 24 for bolts to pass through. A collar 26 made of brass or other metal is fitted into the through hole 24 by methods such as embedding or pressing. The collar 26 is fastened between the bolt head and the nut. A support part 28 protruding downward or upward around the through hole 24 can be provided on the mounting plate 22. The adsorption tank 10 can be directly mounted to the frame component of the vehicle body or mounted with the aid of a bracket.

[0025] [Drain hole]

[0026] The mounting plate 22 has at least one through-hole 30 (two are shown in the figure). The drain hole 30 is disposed between the side wall 17 of the housing 12 and the through hole 24. The drain hole 30 can be any shape, such as circular or square. As a specific embodiment, the drain hole 30 can be, for example, a circle with a diameter of 5 mm or more. In cases other than circular, the drain hole can also be a circle with an area of ​​5 mm or more.

[0027] [Tilt of the mounting plate]

[0028] like Figure 3As shown, the upper surface 22a and lower surface 22b of the mounting plate 22 are both slightly inclined relative to the horizontal plane H, at least locally, so that they decrease in elevation from the through hole 24 toward the drain hole 30. Therefore, even if the mounting plate 22 becomes wet, the water on the upper surface 22a is guided toward the drain hole 30, and the water adhering to the lower surface 22b flows away from the through hole 24. Vibrations during vehicle operation promote their flow downwards. Therefore, for example, in the case where bolts are used for fastening, corrosion of the bolts caused by water accumulating around the through hole 24 can be suppressed. Various inclination directions can be considered for the mounting plate 22. For example, it can be inclined to the same degree from the through hole 24 toward the side wall surface 17 of the housing 12. Alternatively, inclined surfaces can be provided from the through hole 24 toward each of the two drain holes 30.

[0029] The upper surface 22a of the mounting plate 22 has a concave curved surface 22c extending downward from the side wall 17 of the housing 12 toward the drain hole 30. As a result, water falling along the side wall 17 of the housing 12 will not remain on the side of the housing 12, but will be guided to the drain hole 30 by the curved surface 22c.

[0030] The specific implementation methods have been described above, but this technology is not limited to these implementation methods. Those skilled in the art can implement various substitutions, improvements, and changes without departing from the purpose of this technology.

Claims

1. An adsorption tank, wherein, The adsorption tank has the following features: The shell, which houses the absorbent material; and A mounting plate extends from the outer wall surface of the housing. The mounting plate has: a fastening portion for mounting to a vehicle; and at least one drain hole disposed between the housing and the fastening portion. The mounting plate is at least partially tilted in a manner that lowers from the fastener toward the at least one drain hole.

2. The adsorption tank according to claim 1, wherein, The upper surface of the mounting plate has a curved surface extending downward from the outer wall of the housing toward the at least one drain hole.

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